Therefore Adsense Detective can no longer track those settings. If you are using
the older code on your sites then you will not be effected. However, there is no
known way to switch back to the old code if you are producing new ad units
using the Google interface.

However, there is a site that you can use to still get the old code and thus keep
all the Adsense Detective tracking elements. The site is not related to Adsense
Detective in any way and is provided purely as a service to help people having
this problem:-